CN102314062A - Projection type image display apparatus and speaker unit - Google Patents
Projection type image display apparatus and speaker unit Download PDFInfo
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- CN102314062A CN102314062A CN2011101893433A CN201110189343A CN102314062A CN 102314062 A CN102314062 A CN 102314062A CN 2011101893433 A CN2011101893433 A CN 2011101893433A CN 201110189343 A CN201110189343 A CN 201110189343A CN 102314062 A CN102314062 A CN 102314062A
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- loudspeaker
- outer case
- internal box
- unit
- projection
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- 238000009434 installation Methods 0.000 claims description 34
- 230000005540 biological transmission Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2892—Mountings or supports for transducers
- H04R1/2896—Mountings or supports for transducers for loudspeaker transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Even the present invention provides a kind of height outputization of realization loudspeaker also can suppress the projection type image display apparatus of generation of noise.Projector possesses: light-modulating cell (11), and its modulation is from the light of lamp unit (14); Projection optics unit (17), its light after being modulated by the projection surface projection; Loudspeaker unit (19), its output sound; Body shell (1), it disposes said each member.Loudspeaker unit (19) possesses the loudspeaker box (400) of accommodating loudspeaker (300).Loudspeaker box (400) comprising: front panel (410), from behind cover the internal box (430) be installed in the loudspeaker (300) on the front panel (410), cover internal box (430) around and be installed in the outer case (440) on the body shell (1).Between two casings (430,440), be formed with space (S1, S2, S3).
Description
Technical field
The present invention relates to modulate from the light of light source and on by projection surface, amplify the projection type image display apparatus of projection and be built in the speaker unit in the electrical equipments such as projection type image display apparatus.
Background technology
In the past, in projection type image display apparatus such as liquid crystal projection apparatus (below be referred to as " projector "), there was the structure that is built-in with speaker unit.In the so-called business projector of uses such as company and school, be built-in with speaker unit (for example, with reference to patent documentation 1) usually.
Generally speaking, speaker unit constitutes loudspeaker and is contained in the loudspeaker box.The loudspeaker box that contains loudspeaker is configured in the inner assigned position of projector.
Patent documentation 1: TOHKEMY 2008-283716 communique
In the use form of the high output of requirement high tone qualities such as showing of film, need the high speaker unit of exporting.Yet, when the output of loudspeaker becomes big, the loudspeaker box vibration, this vibrates easy peripherad component parts transmission.When vibration is transmitted so towards periphery, possibly produce noises such as judder.
Summary of the invention
The present invention accomplishes in view of this problem, even its purpose is to provide the height outputization that realizes loudspeaker also can suppress the projection type image display apparatus of generation of noise.In addition, even the present invention also aims to provide the height outputization that realizes loudspeaker also can suppress the speaker unit of the vibration of loudspeaker box.
The projection type image display apparatus of first scheme of the present invention possesses: light source; Modulating sections, it is according to the light of signal of video signal modulation from said light source; Projection portion, its light after being modulated by said modulating sections by the projection surface projection; Speaker unit, its output is based on the sound of voice signal; Body shell, it disposes said light source, said modulating sections, said projection portion and said speaker unit.At this, said speaker unit comprises loudspeaker and the loudspeaker box of accommodating this loudspeaker.In addition, said loudspeaker box comprises: front panel, said loudspeaker is installed above that; Internal box, it covers the said loudspeaker that is installed on the said front panel from behind; Outer case, its cover said internal box around and be installed on the said body shell.And, between said internal box and said outer case, be formed with the space.
According to the projection type image display apparatus of first scheme, utilize internal box and outer case with the dual covering of loudspeaker.And, between two casings, be formed with the space.Therefore, though the wall portion of internal box because of from loudspeaker rearward side be that the sound wave that send internal box inside vibrates, the wall portion that also can make vibration be difficult to the outer case around it because of the buffer action of air layer transmits.Therefore, the vibration of outer case is inhibited, and the result can suppress to vibrate the component parts transmission on every side to being positioned at speaker unit.
Need to prove that internal box and outer case can form.In following embodiment, for example as shown in Figure 7, it shows the example of the structure that internal box 430 and outer case 440 form.In addition, in variation shown in Figure 11, internal box 430 forms with outer case 440 splits.
On the basis of the projection type image display apparatus of first scheme, can said outer case be provided with the installation portion of installing to said body shell.In this case, the wall portion of the said outer case that is provided with said installation portion and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
According to this structure,, propagate to body shell via installation portion so can suppress vibration owing to can suppress to be provided with the vibration of the wall portion of installation portion.Thus, can suppress to vibrate propagation via the peripherad component parts of body shell.
On the basis of the projection type image display apparatus of first scheme, can constitute and be equipped with said speaker unit said body shell the opposed said outer case of medial surface wall portion and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
According to this structure; Owing to be inhibited with the vibration of the wall portion of the opposed outer case of said medial surface of body shell; So even the interval between the said medial surface of this wall portion and body shell is narrow, also can suppresses body shell and vibrate because of the vibration of this wall portion.
On the basis of the projection type image display apparatus of first scheme, said speaker unit can constitute the disposed adjacent with said projection portion.In this case, the wall portion of the said outer case of said projection portion side and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
According to this structure,, vibrate because of this vibration so can suppress projection portion because the vibration of the wall portion of the outer case of projection portion side is inhibited.Thus, can prevent to cause being rocked by the generation of the image on the projection surface because of the vibration of projection portion.
On the basis of the projection type image display apparatus of first scheme, the wall portion that can constitute said internal box is reinforced through rib.
According to this structure, because the rigidity of internal box is improved,, internal box is difficult to vibration so becoming, consequently can suppress the vibration of outer case.Therefore, can further suppress to be positioned at speaker unit around the vibration of component parts.
On the basis of the projection type image display apparatus of first scheme, the wall portion that can constitute said outer case is reinforced through rib.
According to this structure, because the rigidity of outer case is improved, so even from the transfer of vibration of internal box, outer case also is difficult to vibration.Therefore, can further suppress to be positioned at speaker unit around the vibration of component parts.
On the basis of the projection type image display apparatus of first scheme, can constitute said front panel is fixed in said outer case at least two fixed positions of the outer rim of said front panel front portion.In this case, between said fixed position, be formed with the press section that said front panel is forwards pushed.
According to this structure, plate is installed under the state of outer case in front, and the outer rim portion of being pressed of front panel forwards pushes, so the outer margin deformation of front panel is with respect to the leading section of the outer case state of warpage a little.Under the acting force of the restoring force of this distortion, the part between the fixed position of the outer rim of front panel is pressed against outer case.Thus, the outer rim of front panel becomes and is difficult to because of vibrating to the vibration of front panel transmission from loudspeaker.Therefore, can be suppressed at the composition surface generation noise of front panel and outer case.
The speaker unit of alternative plan of the present invention possesses loudspeaker and the loudspeaker box of accommodating said loudspeaker.At this, said loudspeaker box comprises: front panel, said loudspeaker is installed above that; Internal box, it covers the said loudspeaker that is installed on the said front panel from behind; Outer case, its cover said internal box around.In addition, between said internal box and said outer case, be formed with the space.
According to the speaker unit of alternative plan of the present invention, because outer case is difficult to vibration, so be installed under the situation of electrical equipments such as projection type image display apparatus at speaker unit, the component parts that can suppress to vibrate around speaker unit is propagated.
The invention effect
As stated, according to the present invention, even can provide the height outputization that realizes loudspeaker also can suppress the projection type image display apparatus of generation of noise.In addition, even can also provide the height outputization that realizes loudspeaker also can suppress the speaker unit of the vibration of loudspeaker box.
Effect of the present invention and even meaning will be through further obtaining clear and definite to the explanation of embodiment shown in following.But, an example when following embodiment is merely embodiment of the present invention at most, the present invention is not limited to any structure of being put down in writing in the following embodiment.
Description of drawings
Fig. 1 is the figure (stereographic map) of surface structure of the projector of this embodiment of expression.
Fig. 2 is the figure (upward view) of surface structure of the projector of this embodiment of expression.
Fig. 3 is the figure of inner structure of the projector of this embodiment of expression.
Fig. 4 is the figure of structure that schematically shows the projection optics unit of this embodiment.
Fig. 5 is the figure of structure that is used to explain the loudspeaker unit of this embodiment.
Fig. 6 is the figure of structure that is used to explain the loudspeaker unit of this embodiment.
Fig. 7 is the figure of structure that is used to explain the loudspeaker unit of this embodiment.
Fig. 8 is the figure of structure that is used to explain the loudspeaker unit of this embodiment.
Fig. 9 is used to explain the figure of the loudspeaker unit of this embodiment to the body shell installation.
Figure 10 is the state of the front panel when schematically showing on the rear box that is installed in this embodiment.
Figure 11 is the figure of structure of the loudspeaker unit of expression variation.
Symbol description
1 body shell
14 lamp unit (light source)
15 light-modulating cells (modulating sections)
17 projection optics unit (projection portion)
19 loudspeaker units (speaker unit)
300 loudspeakers
400 loudspeaker box
410 front panels
430 internal box
432 first stiffening rib (rib)
440 outer case
447 flange parts (installation portion)
442 second stiffening rib (rib)
443 the 3rd stiffening rib (rib)
444 the 4th stiffening rib (rib)
445 the 5th stiffening rib (rib)
446 low ribs (press section)
S1, S2, S3, S4, S5 space
Embodiment
Below, with reference to description of drawings embodiment of the present invention.
Fig. 1 and Fig. 2 represent the surface structure of projector.Fig. 1 (a) is the stereographic map of the observed projector from the place ahead, the stereographic map of Fig. 1 (b) observed projector from the rear.In addition, Fig. 2 is the upward view of projector.Need to prove,, in Fig. 1 (a) and (b) and Fig. 2, describe to represent all around arrow and the arrow of representing above-below direction of direction respectively for the ease of explanation.Below, the same arrow of in other accompanying drawing, also describing the expression direction as required.
The projector of this embodiment is the projector of the burnt porjection type of so-called weak point.With reference to Fig. 1, projector possesses and has the roughly body shell 1 of rectangular shape.Body shell 1 is made up of lower house 2 and the upper shell 3 that covers on lower house 2 from the top.
The second dip plane 1b that is formed with the first dip plane 1a that reduces towards the rear, rearward rises continuously with this first dip plane 1a at the upper surface of body shell 1.The second dip plane 1b is formed with projection mouth 4 towards tiltedly going up the place ahead on the 1b of this second dip plane.Be exaggerated and project on the screen that is configured in projector the place ahead to tiltedly going up image light that penetrate in the place ahead from projection mouthfuls 4.
In addition, the upper surface in body shell 1 is provided with lamp with cover 5.Be formed with the lamp that is used to change the lamp unit with opening and the filtrator opening that is used to change filtrator at the upper surface of body shell 1, said filter deployment is at the fan unit that is used for the cool down lamp unit.Lamp uses cover 5 for being used to cover these lamps with opening and the filtrator cover with opening.And, be provided with the operating portion 6 that constitutes by a plurality of operating keys at the upper surface of body shell 1.
Right flank in body shell 1 is formed with terminal oral area 7.Dispose terminal panel 233 at terminal oral area 7, this terminal panel 233 has various terminals such as AV terminal.The part of the control circuit unit of stating after terminal panel 233 constitutes.AV such as signal of video signal and voice signal (audio frequency and video) signal passes through the AV terminal input and output in projector.In addition, at the right flank of body shell 1, above terminal oral area 7, be provided with air entry 8.Air entry 8 is made up of the hole of a plurality of slit-shaped, and extraneous air enters in the body shell 1 through air entry 8.
At the left surface of body shell 1, forwardly be provided with first exhausr port 9, be provided with second exhausr port 10 at central portion.Said exhausr port 9,10 holes by a plurality of slit-shaped constitute, and the inner air of body shell 1 is discharged to device external through said exhausr port 9,10.In addition, be formed with outlet sound mouth 11 on the back surface of body shell 1.When projection, export the sound corresponding with image from outlet sound mouth 11.
With reference to Fig. 2, the front, center portion in the bottom surface of body shell 1 is provided with Convenient table 12, is provided with two adjustment legs 13 in rearward end.Through making two adjustment legs 13 flexible up and down, can adjust the fore-and-aft direction of body shell 1 and the inclination of left and right directions.Thus, can and tilt to the upper-lower position that projects the image on the screen and adjust.
In the projector of this embodiment, except the bottom surface of adopting body shell 1 is arranged on desk or floor etc. laying the setting on the face is set, body shell 1 also can adopt it to be arranged on the suspention setting on the ceiling with turning upside down.In addition, at the front surface of body shell 1 terminal panel 233 and air entry 8 are not set, front surface becomes smooth face.Therefore, utilize the projector of this embodiment, can adopt the front surface of body shell 1 to be arranged at the form that is provided with on the face of setting.In this case, image projection to be provided with face originally on one's body.
Fig. 3 is the figure of the inner structure of expression projector.This figure is the stereographic map of the state after being removed from the observed upper shell 3 in the place ahead.Need to prove that for the ease of explanation, with dashed lines is drawn light-modulating cell 15 and projection optics unit 17 in Fig. 3.In addition, the position of representing air entry 8 with dot-and-dash line.
With reference to Fig. 3, dispose lamp unit 14 and light-modulating cell 15 in the front portion of lower house 2,15 pairs of light from lamp unit 14 of this light-modulating cell are modulated and are generated image light.
Light-modulating cell 15 comprises colour wheel and DMD (digital micromirror elements).Colour wheel will be separated into each coloured light such as red, green, blue from the white light of illuminator with the mode of timesharing.DMD modulates each coloured light that penetrates from colour wheel according to signal of video signal.
Dispose projection optics unit 17 at the rear of light-modulating cell 15.The image light amplification that projection optics unit 17 will be generated by light-modulating cell 15 also projects screen etc. by on the projection surface with it.
Fig. 4 is the figure that schematically shows the structure of projection optics unit 17.Need to prove, in the figure, except projection optics unit 17, also schematically drawn light-modulating cell 15, control circuit unit 23 and noise filtering unit 24.
As shown in Figure 4, the image light that penetrates from light-modulating cell 15 from the optical axis L of projection lens unit 171 to position that the upper surface direction of body shell 1 has squinted to 171 incidents of projection lens unit.The image light of incident receives the lensing of projection lens unit 171, thereby to catoptron 172 incidents.Then, image light through catoptron 172 by wide-angleization, thereby via light through window 174 and to being throwed by projection surface (screen cover).
As stated; Image light since from the optical axis L of projection lens unit 171 to position that the upper surface direction of body shell 1 has squinted to 171 incidents of projection lens unit, so catoptron 172 is configured to from the bottom surface side skew to body shell 1 of the optical axis L of projection lens unit 171.At this, because catoptron 172 has the bigger reflecting surface of lens face than each lens that constitutes projection lens unit 171, so catoptron 172 is bigger with respect to the side-play amount of the optical axis L of projection lens unit 171.Therefore, below projection lens unit 171, and the bottom surface of body shell 1 (lower house 2) between produce bigger space G.This space G produces at the allocation position from the allocation position of projection lens unit 171 to light-modulating cell 15.
Turn back to Fig. 3, dispose power supply unit 18 at the rear of fan unit 16.Power supply unit 18 possesses power circuit, and it carries out the supply of power supply to each parts of electric of projector.Dispose loudspeaker unit 19 at the rear of power supply unit 18.11 send to the outside from the sound of loudspeaker Unit 19 output from outlet sound mouth.
At the right-hand DMD that disposes of light-modulating cell 15 with cooling fan 20.The extraneous air that DMD gets into from suction inlet 8 to light-modulating cell 15 supplies in order to cool off DMD with cooling fan 20.Need to prove that DMD is configured in the light-modulating cell 15 with air-tight state, DMD does not directly contact with the extraneous air that is come by air blast.
Left at fan unit 14 is provided with first exhaust unit 21.First exhaust unit 21 is discharged through first exhausr port 9 cooling air after the cools light source lamp to the outside.Need to prove that the air behind the cooling DMD is also discharged to the outside from first exhausr port 9 through first exhaust unit 21.
Left at power supply unit 18 is provided with second exhaust unit 22.Second exhaust unit 22 is discharged through second exhausr port 10 the warm air in the power supply unit 18 to the outside.Through air is flowed to second exhaust unit 22 in power supply unit 18, thereby new extraneous air is taken into and supply to power supply unit 18 in from air entry 8.
Like Fig. 3 and shown in Figure 4, in the projector of this embodiment, the above-mentioned space G configuration control circuit unit 23 and the noise filtering unit 24 that below projection lens unit 171 and light-modulating cell 15, produce.
On control circuit substrate 231, dispose the control circuit that is used to control various driver parts such as illuminator and DMD.In addition, on control circuit substrate 231, dispose various terminals 235.
On terminal panel 233, be formed with the opening with the form fit of various terminals 235, various terminals 235 are through said opening and towards the outside.Need to prove,, on fixed head 234, also be formed with the opening that various terminals 235 pass through though do not illustrate.
Fig. 5 to Fig. 8 is the figure that is used to explain the structure of loudspeaker unit 19.Fig. 5 (a) is the exploded perspective view of loudspeaker unit 19, and Fig. 5 (b) is the assembling stereogram of loudspeaker unit 19.Fig. 5 (c) is the figure of the A-A ' section of schematically illustrated Fig. 5 (b).Fig. 6 (a) is the rear view of the front panel 410 before the installation loudspeaker 300, and Fig. 6 (b) is the rear view that the front panel 410 of loudspeaker 300 is installed.Fig. 7 is the stereographic map from the observed rear box 420 of oblique upper, and Fig. 8 is the front view of rear box 420.
With reference to these accompanying drawings, the structure of loudspeaker unit 19 is elaborated.
The output power of loudspeaker 300 for example is 10W, and as the loudspeaker that is built in projector, it is the loudspeaker than higher output.
Like Fig. 5 and shown in Figure 6, front panel 410 has square configuration.The central portion of plate 410 is provided with panel installation portion 411 in front.On panel installation portion 411, be formed with circular peristome 411a.In addition, at panel installation portion 411, be formed with installation base 411b in the left and right sides across peristome 411a.And, be formed with the 411c of frame portion of the front surface shape of imitation loudspeaker 300 at the back side of panel installation portion 411.Shown in Fig. 6 (b), loudspeaker 300 is embedded in the 411c of frame portion.At this moment, the inserting hole 301 that is arranged on the both ends of loudspeaker 300 aligns with installation base 411b.Screw 501 is fixed in installation base 411b through each inserting hole 301.Thus, loudspeaker 300 is fixed on the panel installation portion 411.
The front surface of plate 410 is formed with panel rib 412 around panel installation portion 411 in front.Panel rib 412 constitutes by forming cancellate stiffening rib 412a.Can improve the rigidity of front panel 410 through panel rib 412.The vibration of the front panel 410 in the time of thus, can making loudspeaker 300 work is inhibited.
In addition, be formed with on the plate 410 in front and connect the panel and the passage 413 of outstanding drum rearward.
And four of plate 410 bights are formed with the installation recess 414 of depression rearward in front.On said installation recess 414, be formed with inserting hole 414a.In addition, three positions in panel rib 412 also are formed with inserting hole 412b.
And three of the back side of plate 410 positions are formed with guiding rib 415,416,417 in front.
Like Fig. 5, Fig. 7 and shown in Figure 8, rear box 420 comprises internal box 430 and the outer case 440 on every side that covers internal box 430.Internal box 430 and outer case 440 are integrally formed, and form roughly cubic shaped.The upper wall of internal box 430 and rear wall respectively by shared be the upper wall and the rear wall of outer case 440.Between sidewall about the sidewall of internal box about 430 and rear wall and outer case 440 and diapire, be formed with space S 1, S2, S3 respectively.
And, be formed with depressed part 450 in the bottom on the right side of rear box 420.The formation of depressed part 450 be for when body shell 1 is installed loudspeaker unit 19, supply from the bottom surface of body shell 1 to above the axial region of outstanding adjustment leg 13 keep out of the way.Yet adjustment leg 13 waits other members if do not interfere with loudspeaker unit 19, depressed part 450 need be set.In this case, the shape on the right side of internal box 430 and outer case 440 is identical with the shape in left side.
On internal box 430, the inboard of sidewall and the outside are formed with installation base 431 respectively in the left and right sides.In addition, on the internal face of internal box 430, be formed with four first stiffening rib 432.First stiffening rib 432 with across about the mode of sidewall and rear wall on above-below direction, vacate proper spacing ground and form.
Four bights in outer case 440 are formed with installation base 441 respectively.In addition, the outside wall surface of the internal face of outer case 440 and outer case 430 is formed with two second stiffening rib 442, one the 3rd stiffening rib 443, two pieces the 4th stiffening rib 444, three the 5th stiffening rib 445.
Position about first stiffening rib 432, second stiffening rib 442 and the 3rd stiffening rib 443 any one all is along with reducing highly gradually from the rear towards the place ahead.In addition, the position up and down of the 5th stiffening rib 445 is along with reducing highly gradually from the rear towards the place ahead.Thus, when making rear box 420 when being shaped, resin flow property is good, in addition, can the rear box 420 after being shaped be deviate from from mould swimmingly.
At the upper wall of outer case 440 and the leading section of diapire, respectively about the pars intermedia in two bights be formed with forwards outstanding a little rib 446 (below be referred to as " low rib 446 ").Sidewall about outer case 440, equally also the pars intermedia in two bights up and down forms low rib 446 respectively.The overhang of low rib 446 is ten/several millimeters a degree.
The sidewall about outer case 440 and the exterior side of rear wall are formed with flange part 447 respectively.The lining 503 that is formed by elastomeric material is installed at flange part 447.Need to prove,, omit diagram it about the flange part 447 of the rear wall of outer case 440.
When assembling loudspeaker unit 19, at first, such shown in Fig. 6 (b), loudspeaker 300 is installed at the back side of plate 410 in front.Then, from the place ahead front panel 410 is installed to the front surface of rear box 420.At this moment, the guiding rib 415 at the back side of front panel 410 joins from inboard upper wall with internal box 430.In addition, guiding rib 416 joins with formation space S 1, the internal box 430 of S3 and the wall portion of outer case 440 from inboard.And then guiding rib 417 joins with the internal box 430 that constitutes space S 2 and the wall portion of outer case 440 from inboard.
When front panel 410 was installed in rear box 420, the inserting hole 414a in four bights of front panel 410 alignd with the threaded hole of the installation base 441 in four bights of outer case 440.In addition, three of panel rib 412 inserting hole 412b align with the threaded hole of three installation bases 431 of internal box 430.Screw 502 is anchored on installation base 441 through each inserting hole 414a.In addition, screw 502 is anchored on the installation base 431 corresponding with this inserting hole 412b through the inserting hole 412b of the below that is positioned at panel installation portion 411 among three inserting hole 412b.Thus, front panel 410 is fixed on the rear box 420.Need to prove, in this embodiment, though do not use two the inserting hole 412b and the installation base 431 corresponding of panel installation portion 441 with it, as need further firmly fix, also can between them, carry out screw threads for fastening.
Like this, shown in Fig. 5 (b), loudspeaker unit 19 is assembled.Shown in Fig. 5 (c), under the state after loudspeaker unit 19 is assembled, the rear of loudspeaker 300 is not had the ground of omission by internal box 430 and covers.
Fig. 9 is used to explain the figure of loudspeaker unit 19 to the installation of body shell 1.Fig. 9 (a) is the exploded perspective view that expression loudspeaker unit 19 is installed to the projector major part of the state before the body shell 1.Fig. 9 (b) is the exploded perspective view that expression loudspeaker unit 19 is installed to the projector major part of the state after the body shell 1.
Be that the bottom surface of lower house 2 is formed with three installation bases 101 corresponding with three flange parts of loudspeaker box 400 447 in the bottom surface of body shell 1.Need to prove, in Fig. 9, only illustrate the flange part 447 of right side wall.
When body shell 1 is installed loudspeaker unit 19, the hole that embeds the lining 503 of each flange part 447 embeds the leading section of corresponding installation base 101, and screw 504 is anchored on installation base 101 with the mode in the hole through lining.Thus, flange part 447 is fixed in installation base 101 via lining 503.Like this, loudspeaker unit 19 is fixed on the bottom surface of body shell 1.
When from control circuit substrate 231 input audio signals, loudspeaker 300 moves according to voice signal.That is, the Tapered Cup of loudspeaker 300 is vibrated according to voice signal, and sound wave sends to the place ahead and the rear of loudspeaker 300.Sound wave to send in the place ahead of loudspeaker 300 is emitted to the place ahead of loudspeaker box 400 through peristome 411a.On the other hand, launched by the internal face of internal box 430 from the sound wave that loudspeaker 300 rearward sends, and emit from passage 413.Thus, bass is strengthened, thereby realizes not existing unclean, tonequality clearly.
When loudspeaker 300 moved, each wall of sound wave that rearward sends and internal box 430 was collided and is increased vibration.Yet the inboard of the left side wall of internal box 430 is strengthened by first stiffening rib 432, and the outside of the left side wall of internal box 430 is strengthened by second stiffening rib 442.In addition, the inboard of right side wall is strengthened by first stiffening rib 432, and the outside of right side wall is strengthened by the 3rd stiffening rib 443.And the inboard of rear wall is strengthened by first stiffening rib 432, and the outside of diapire is strengthened by the 5th stiffening rib 445.Like this, owing to the sidewall about internal box 430, rear wall and diapire strengthen improving rigidity by stiffening rib 432,442,443,445, so also can suppress vibration even sound wave is collided with it.
In addition; Owing between the left side wall of the left side wall of internal box 430 and outer case 440, be formed with space S 1; Even so the left side wall of internal box 430 vibration also can make vibration be difficult to the left side wall transmission to outer case 440 because of the buffer action of the air layer of space S 1.And then the inboard of the left side wall of outer case 440 is strengthened by second stiffening rib 442 and has been improved its rigidity, so even transmitted vibration from internal box 430, the left side wall of outer case 440 also is difficult to vibration.
Equally, even the right side wall of internal box 430 vibration also can make vibration be difficult to the right side wall transmission to outer case 440 because of the buffer action of the air layer of space S 2.In addition, the inboard of the right side wall of outer case 440 is strengthened by the 3rd stiffening rib 443 and the 4th stiffening rib 444, thereby its rigidity is improved.Therefore, the right side wall of outer case 440 also is difficult to vibration with left side wall equally.
Equally, even the diapire of internal box 430 vibration also can make vibration be difficult to the diapire transmission to outer case 440 because of the buffer action of the air layer of space S 3.In addition, the inboard of the diapire of outer case 440 is strengthened by the 5th stiffening rib 445, thereby its rigidity is improved.Therefore, the diapire of outer case 440 also with about sidewall be difficult to equally the vibration.
Like this, in this embodiment, even because of the sound wave from loudspeaker 300 applies vibration to internal box 430, sidewall about outer case 440 and diapire also are difficult to vibration.Therefore, can suppress to vibrate via the flange part on the sidewall about being formed on 447 to the propagation of the bottom surface of body shell 1.In addition, can also suppress the bottom surface vibration that vibration because of diapire causes the narrow body shell 1 in the interval of diapire.Thus, can prevent to be installed on the bottom surface of body shell 1 other the component parts vibration and produce noise such as judder.
In addition, adjacent disposes projection optics unit 17 (with reference to Fig. 3) in the left side of loudspeaker unit 19.In this embodiment,, be difficult to propagate near the projection optics unit that is positioned at left side wall 17 so vibrate because the vibration of the left side wall of outer case 440 is suppressed.Therefore, can prevent to rock because of 17 vibrations of projection optics unit cause the image that projects screen to produce.
Need to prove that in this embodiment, loudspeaker box 400 is formed by resin material, have difficulties, so between the rear wall of the rear wall of internal box 430 and outer case, be not formed with the space because in the moulding manufacturing, form.Yet the part of the rear wall of the double as internal box 430 of the rear wall of outer case 440 is strengthened by first stiffening rib 432, and its other parts are strengthened by second stiffening rib, 442 to the 5th stiffening rib 445.Therefore; Because the whole rigidity of the rear wall of outer case 440 is improved; Even so be applied directly to the rear wall of outer case 440 of the rear wall of double as internal box 430 from the vibration of loudspeaker 300, the rear wall integral body of outer case 440 also can suppress vibration with doing one's utmost.Therefore, can suppress vibration propagates to the bottom surface of body shell 1 via the flange part 447 that is formed on the rear wall with doing one's utmost.
In addition, in this embodiment, between the upper wall of the upper wall of internal box 430 and outer case 440, do not form the space yet.And, do not form stiffening rib yet.Therefore, the upper wall of outer case 440 can vibrate greatlyyer than other wall portions.Yet, in this embodiment, near above the loudspeaker unit 19, do not have component parts, so do not have big problem even go up wall vibrations yet.Like this, if do not form the space, then can the size of loudspeaker unit 19 be suppressed to and be no more than necessary limit for unwanted part.
Figure 10 is the figure that schematically shows the state of the front panel 410 that is installed in 420 last times of rear box.Figure 10 (a) representes the loudspeaker unit 19 of this embodiment, the loudspeaker unit 19 of Figure 10 (b) expression variation.Need to prove that for the ease of explanation, in Figure 10, low rib 446 is described highlyer than actual, rear panel 410 is depicted as and the actual state of comparing extreme warpage.
Shown in Figure 10 (a), plate 410 is installed under the state on the outer case 440 in front, because the outer rim of front panel 410 is pressed to the place ahead by low rib 446, so the outer margin deformation of front panel 410 is with respect to the leading section of outer case 440 state of warpage a little.Under the effect of the restoring force of this distortion, the part between two fixing bights of the outer rim of front panel 410 is pressed against outer case 440.Thus, the outer rim of front panel 410 is difficult for because of vibrating to the vibration that front panel 410 transmits from loudspeaker 300.
Therefore, in this embodiment, the composition surface that can be suppressed at front panel 410 and outer case 440 produces noise.
Need to prove that under the situation that is not formed with low rib 446, the part between two fixing bights of the outer rim of front panel 410 is difficult to be pressed against the leading section of outer case 440.Therefore, the outer rim of front panel 410 is vibrated easily, and the composition surface of plate 410 and outer case 440 is easy to generate noise in front.
Need to prove that shown in Figure 10 (b), low rib 446 can not be formed on outer case 440 sides and be formed in front panel 410 sides.
More than, though this embodiment is illustrated, the present invention is not limited to above-mentioned embodiment, in addition, can carry out above-mentioned various changes in addition for embodiment of the present invention.
(variation)
Figure 11 is the figure of structure of the loudspeaker unit 19 of expression variation.Figure 11 (a) is the front view of loudspeaker unit 19, and Figure 11 (b) is the side view of the B-B ' of Figure 11 (a).
In the loudspeaker unit 19 of this variation, internal box 430 forms with outer case 440 splits ground.Each casing 430,440 is fixed on the back side of front panel 410 respectively through screw etc.In addition, between the upper wall of the upper wall of internal box 430 and outer case 440, be formed with space S 4.And, between the rear wall of the rear wall of internal box 430 and outer case 440, also be formed with space S 5.
Like this, compare, can suppress the vibration of the upper wall and the rear wall of outer case 440 with above-mentioned embodiment.
Self-evident is also only to form any space among two space S 4, the S5.In addition, in this variation, any at least side of internal box 430 and outer case 440 also can be strengthened by stiffening rib.
(other)
In the above-described embodiment, between the sidewall about sidewall about internal box 430 and outer case 440, be formed with space S 1, S2, and between the diapire of the diapire of internal box 430 and outer case 440, be formed with space S 3.Yet, transmit via flange part 447 peripherad component parts especially easily from the vibration of outer case 440.Therefore, as above-mentioned embodiment, be formed with at the sidewall about loudspeaker box 400 under the situation of flange part 447, also can only between the sidewall about sidewall about internal box 430 and outer case 440, form space S 1, S2.If like this, then can do one's utmost to reduce loudspeaker unit 19.
In addition, in the above-described embodiment, internal box 430 is strengthened by stiffening rib 432,442～445 with outer case 440 both sides.Yet,, also can constitute through stiffening rib and only strengthen internal box 430 or outer case 440 according to the intensity of the vibration that applies by loudspeaker 300.
And then speaker unit of the present invention is also applicable to other electrical equipments beyond the projector such as computing machine.
In addition, can also in the scope of the technological thought shown in claims, suitably carry out various changes to embodiment of the present invention.
Claims (8)
1. projection type image display apparatus is characterized in that possessing:
Light source;
Modulating sections, it is according to the light of signal of video signal modulation from said light source;
Projection portion, its light after being modulated by said modulating sections by the projection surface projection;
Speaker unit, its output is based on the sound of voice signal;
Body shell, it disposes said light source, said modulating sections, said projection portion and said speaker unit,
Said speaker unit comprises loudspeaker and the loudspeaker box of accommodating this loudspeaker,
Said loudspeaker box comprises:
Front panel is installed said loudspeaker above that;
Internal box, it covers the said loudspeaker that is installed on the said front panel from behind;
Outer case, its cover said internal box around and be installed on the said body shell;
Between said internal box and said outer case, be formed with the space.
2. projection type image display apparatus according to claim 1 is characterized in that,
Said outer case is provided with the installation portion of installing to said body shell,
The wall portion of the said outer case that is provided with said installation portion and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
3. projection type image display apparatus according to claim 1 and 2 is characterized in that,
And be equipped with said speaker unit said body shell the opposed said outer case of medial surface wall portion and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
4. according to any described projection type image display apparatus in the claim 1 to 3, it is characterized in that,
Said speaker unit and said projection portion disposed adjacent,
The wall portion of the said outer case of said projection portion side and and the wall portion of this opposed said internal box of wall portion between be formed with said space.
5. according to any described projection type image display apparatus in the claim 1 to 4, it is characterized in that,
The wall portion of said internal box is reinforced through rib.
6. according to any described projection type image display apparatus in the claim 1 to 5, it is characterized in that,
The wall portion of said outer case is reinforced through rib.
7. according to any described projection type image display apparatus in the claim 1 to 6, it is characterized in that,
Said front panel is fixed in the front portion of said outer case at least two fixed positions of the outer rim of said front panel,
Between said fixed position, be formed with the press section that said front panel is forwards pushed.
8. speaker unit is characterized in that possessing:
Loudspeaker;
Loudspeaker box, it accommodates said loudspeaker,
Said loudspeaker box comprises:
Front panel is installed said loudspeaker above that;
Internal box, it covers the said loudspeaker that is installed on the said front panel from behind;
Outer case, its cover said internal box around,
Between said internal box and said outer case, be formed with the space.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010154344A JP2012018232A (en) | 2010-07-06 | 2010-07-06 | Projection type display device and speaker device |
| JP2010-154344 | 2010-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102314062A true CN102314062A (en) | 2012-01-11 |
Family
ID=45427344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101893433A Pending CN102314062A (en) | 2010-07-06 | 2011-07-01 | Projection type image display apparatus and speaker unit |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20120008095A1 (en) |
| JP (1) | JP2012018232A (en) |
| CN (1) | CN102314062A (en) |
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| CN105242486A (en) * | 2015-10-30 | 2016-01-13 | 苏州佳世达光电有限公司 | Display device |
| CN105828054A (en) * | 2016-03-28 | 2016-08-03 | 苏州佳世达光电有限公司 | Projection device |
| TWI587063B (en) * | 2015-07-03 | 2017-06-11 | 佳世達科技股份有限公司 | Projector |
| CN108991700A (en) * | 2013-09-26 | 2018-12-14 | 戴森技术有限公司 | Hand-held instruments |
| CN112383762A (en) * | 2020-11-11 | 2021-02-19 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
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| JP6098075B2 (en) * | 2012-09-10 | 2017-03-22 | 株式会社リコー | Electronic equipment, image projection device |
| JP6167754B2 (en) * | 2013-08-22 | 2017-07-26 | 三菱電機株式会社 | projector |
| JP1566659S (en) * | 2016-04-28 | 2017-01-10 | ||
| TWI623803B (en) * | 2017-04-07 | 2018-05-11 | 佳世達科技股份有限公司 | Projector |
| US11516354B2 (en) | 2017-06-30 | 2022-11-29 | Hewlett-Packard Development Company, L.P. | Imaging device with audio portion |
| CN112261523B (en) * | 2020-10-23 | 2023-03-21 | 成都极米科技股份有限公司 | Sound box mounting structure |
| US11622177B2 (en) * | 2021-08-02 | 2023-04-04 | Robert Bosch Gmbh | Loudspeaker assembly with internal screw bosses |
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Also Published As
| Publication number | Publication date |
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| JP2012018232A (en) | 2012-01-26 |
| US20120008095A1 (en) | 2012-01-12 |
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Application publication date: 20120111 |